After a collaborative family law process concludes, another lawyer in a law firm with which a collaborative lawyer disqualified under § 15.106(b) is associated may represent a party without a fee in the collaborative family law matter or a matter related to the collaborative family law matter if:
(1) the party has an annual income that qualifies the party for free legal representation under the criteria established by the law firm for free legal representation;
(2) the collaborative family law participation agreement authorizes that representation; and
(3) the collaborative lawyer is isolated from any participation in the collaborative family law matter or a matter related to the collaborative family law matter through procedures within the law firm that are reasonably calculated to isolate the collaborative lawyer from such participation.